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Full Discussion: problem with floating point number loops
Top Forums Shell Programming and Scripting problem with floating point number loops Post 302430784 by DeepakS on Friday 18th of June 2010 05:21:20 PM
Old 06-18-2010
Quote:
Originally Posted by ergy1983
ok. thanks.

Do you then have an idea how to realize such a grid by a loop easily?

And thanks for your reply, sam
My Deutsch isn't all that great, so to make sure I'm clear on what you're doing here - you want to find the number of steps between between two constant values.

Isn't this essentially a division problem? For example if the abstand=2, your xmax is 6 and your ymax is 4 the output table would be:

Code:
6 4 0.75 0 0 1
6 2 0.75 0 0 1
6 0 0.75 0 0 1
4 4 0.75 0 0 1
4 2 0.75 0 0 1
4 0 0.75 0 0 1
2 4 0.75 0 0 1
2 2 0.75 0 0 1
2 0 0.75 0 0 1
0 4 0.75 0 0 1
0 2 0.75 0 0 1
0 0 0.75 0 0 1

Also, are you limited to using a shell script? The only way I know of to do floating point comparisons in bash is pretty kludgy. If you have perl available and my understanding is correct I could definitely create a script to handle this.

Quote:
Originally Posted by dr.house
A possible work-around: convert all meter into centimeter values, e.g. by means of sed or awk Smilie
This would only push the failure point to millimeters.
 

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LEARN ABOUT DEBIAN

plgspa

PLGSPA(3plplot) 						    PLplot API							   PLGSPA(3plplot)

NAME

       plgspa - Get current subpage parameters

SYNOPSIS

       plgspa(xmin, xmax, ymin, ymax)

DESCRIPTION

       Gets  the size of the current subpage in millimeters measured from the bottom left hand corner of the output device page or screen.  Can be
       used in conjunction with plsvpa(3plplot) for setting the size of a viewport in absolute coordinates (millimeters).

       Redacted form: plgspa(xmin, xmax, ymin, ymax)

       This function is used in example 23.

ARGUMENTS

       xmin (PLFLT *, output)
	      Pointer to variable with position of left hand edge of subpage in millimeters.

       xmax (PLFLT *, output)
	      Pointer to variable with position of right hand edge of subpage in millimeters.

       ymin (PLFLT *, output)
	      Pointer to variable with position of bottom edge of subpage in millimeters.

       ymax (PLFLT *, output)
	      Pointer to variable with position of top edge of subpage in millimeters.

AUTHORS

       Geoffrey Furnish and Maurice LeBrun wrote and maintain PLplot.  This man page was automatically generated from the DocBook  source  of  the
       PLplot documentation, maintained by Alan W. Irwin and Rafael Laboissiere.

SEE ALSO

       PLplot documentation at http://plplot.sourceforge.net/resources.

								   August, 2012 						   PLGSPA(3plplot)
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